Fan



P. A. ANDERSON.

' FAN.

APPLICATIONl FILI-ID MAY l?. 1919.

1,328,255. Y Patenteduan. 20,1920.;

lio

.ICPER AUGUST ANDERSON, 0F NEW YORK, N. Y.

FAN.

To all whom t may concern:

Be it known that l. PE1: AUGUST ANDER- soN, a` citizen of the United States, and resident of the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Fans, of which the following is a specification. y

My invention relates tov fans and more particularly to that type thereof in which the fan member is vibrated to and fr0 relatively to a supporting means and has for its object to provide a simple construction in which the operating elements are actuated electro-magnetically in a uniform and effi-- Ital section on the line 3--3 of Fig. 1.

As shown in the illustrated example, the

fan comprises a suitable frame which may be in the nature of a spider having an intermediate section 6 from which converging members'7 and 8 extend in opposite directions as illustrated in Fig. 1. The free ends of the members 7j and 8 are spaced apart and are rigidly connected respectively'by transverse members 9 andy 10 spaced apart in pairs, as-

shown in Fig. 2. The construction further includes open-ended tapering covers 11 and 12 which lit yover the members 7 and 8 and over r`the 'section 6' andare securedfin position by frlction or 1n any other convenient manner, as'forinstance, by means ofscrews y or other fas'tening'devices. 'Ihe covers 11 and 12, with the frame y5., constitute a casing within whichA the operating mechanism to be fully explainedhereinafter, is contained. "n Asyshown' in the drawing,` the operating mechanism compriseselectro-magnets 13 'and 14' arranged in pairs in opposed relation to eachother and *spaced in axial 4alinement as shownjn Fig.' 3.V The electro-Iiiaguets v 13' and 1111'aref'supportedupon .the intermediate section of 'the'frameand are securedlin" 159551.*1'011' 111' any" @Onvenint manner, as' by screws' 15,suitable insulation being provided Specification of Letters Patent.

Patented J an. 20, 1920.

Application led May 17, 1919. Serial No. 297,770.

17 carried by and extending 'between the transverse members -9 and depends therefrom between the magnets ,13 and 14. At points in registry with said electro-magnets,

the lever 16 is provided with armatures 18 60 which may constitute integral parts of said lever or comprise soft iron sections suitably connected therewith. The lever 16 carries switch members 19 and 20 properly insulated from the lever and from each other and coperating respectively with stationary switch-members 21 and 22 mounted upon a bracket 23 secured to the members 7 of the frame 5. Thecoperating switch members 19 and 21 are located in a circuit af-b-o, l70

whereby the pair of electro-magnets 13 are connected with a source of electrical energy while the switch members 2O and 22 are located in a circuit d-e-f whereby the pair d of electro-magnets 14 are connected with saidv 7 5 source of electrical energy. These coperating switch members arearranged to alternately close and break the respective circuits to alternately energize each pair of electro'- magnets, as will be more fully described hereinafter, it being lunderstood that the circuit a-b-c is closed when' the 'circuit dl-ei-f is open and vice-versa.

The construction further includes a fanmember 24 of'any suitable construction located exteriorlyV of the vcasing formed by the covers 11 and 12 and the support 5, said fan 90'v member, in the illustratedjexample', being detachably connected withv a socket-member 25 pivotally mounted upon a pin 26 extending between vand carried by the transversev membersl 10, as shown in Fig. 2. In order that the fan-member may be vibratedback and vforth in the intended manner, the socketmember 25 isoperativelyconnectedl'with the lever 16 in any suitable way. For instance,`

shown in @he .illustrated examplesaidf socket-member 25 may be 'continuedin 'the formf'of a fork 27v in wliilclifa roller28fis') jolmaled uponapiaaa the roller 28'ii1w'm being located within ayoke 30`Afprojecting' from the free end of the lever `1`6,as"shown` i in vFig- 1- It wi11,tgofioursie,sbe'undated@ that anylfequivalentarrangement, other lthail,y the one shown ,andr 'described,"may be Kusdgy for operatively:@meting-acfasmember 24'with thefleverls To insurea 'substan-v llVhereyer.` 'n necessary, the parts are properly insulated in the well-known way against short circui't- 85 j brated. 3 5

tially constant and uniform vibratory movement in the fan member 24 when the -fan is in'operation and to prevent jerkiness and shocks, coil springs 31 and 32 are connected with said lever 16, and extend in opposite directions' therefrom to the frame 5 with which said springs are also connected. These springs 31 and 32 balance the lever 16 as will 'be readily` understood; the spring 32 is preferably somewhat shorter or of slightly greater tension than the spring 31 so that the lever 16 will always assume the position shown in Fig. 1when the mechanism is at rest. The difference between the springs is just suflicient to accomplish this result and is not great enough to interfere materially with the uniformity and evenness of movement of the movable parts..

The fan as a whole may be mounted in any convenient way and upon any suitable devices and may,` for instance, be suspended from the ceiling or any othersupport. In such case the section 6 of the frame 5 may be provided with a pair of annular ribs 33 between which a split collar 34 is accommodated; the collar 34 constitutes part ,of a suspending means 35 of suitable construcvtion which is attached to the ceiling whereby the fan is lsuspended in operative position. The described arrangement permits the fan as a whole to be rotatably adjusted in said collar 34 and about its axis to change the plane in which the fan member 24 is vi- It will be understood that a suitable switch or equivalent means is provided for the purpose of'cutting off or turning on the electric current whereby the fan is operated. of rest, the'parts occupy the position shown in Fig. 1 1n which the switch members 19 and .21 are'maintained in contact, with each otherso that the circuit -b-c controlling the electro-magnets 13 v is closed. If the main circuit is now closed or fin other words the electric current is.

turned on, the magnets 13 will become electricall energized and will thus exert a magnetic orce u on the armatures 18 whereby the lever 16 1s pivotally swung toward the left in Fig. `1. As this occurs, the switchmembers 19 and 21\willy become separated', thus breaking the circuit -b-c and the switch members 20 and 22 will be caused to contact with each other'whereby thecircuit d-e--f is closed. In this way the electro-magnets 13 are rendered inactive while the magnets 14 are electrically energized and thus caused tol exert a magnetic force upon the armatures 18,whereby the lever 16 is swung back to the right in Fig. 1. The circuits a.-bc and aZ-e--f are thus closed alternately and opened alternately so that the lever 16 is oscillated back and forth on its pivot 17 between the magnets 13 and 14. This/oscillation of said lever 16 communifan member 24, and by cated to the fan member 24 throughthe medium of the roller 28 and yoke 30 and y causes said fan member 24 to be pivotally vibrated backand forth on its pivot 26 in sweeping movements corresponding to the movements imparted t`o an ordinary fan when manually actuated.

The switch members 19 and 2O areJ resilient and are preferably constructed so as to remain in contact with the members 21 and 22 during the major portion of the swinging movements of said lever 16; with `brings about an agitation of the air which is cooling and yet is entirely free from drafts. The operation of the fan continues until the circuit which supplies the electrical energy is broken whereupon the parts again come to rest in the position shown in Fig. 1, this being due to the relatively shorter length or greater tension of the spring 32. The fan is thus again ready for immediate operation and the possibility of the lever 16 coming to rest at dead center between the magnets with the consequent necessity for a preliminary manual actuation, is entirely avoided. l

The fan is very mild in its action and may thus be used to advantage in the hospital or sick room and elsewhere where a violent disturbance of the air is not desired but where a gentle fanning of a patient is benecial. n

By having the switch members, whereby the circuits controlling the electro-magnets are,` closed and broken, located directly) upon the oscillating lever and carried there y, the action is positive and of maximum `e'lciency, the possibility of a miss either in closing or breaking the circuit being done away with. The fan issimple in construction, requires no specially skilled attention, and may be produced ecomically and operated eiciently at a tion.

Various changes in the specific form shown vand described may be made within the scope of the claims withoutl departing low cost and with practically no atten- .r

the movements thereof whereby the circuits controlling said 'magnets are closed and broken and a fan member pivotally mounted on said support independently of said armature member and operativel)v connected with the latter so as to be pivotally vibrated thereby.

- 2. In an automatic fan` a support, electromagnets carried thereb)v in opposed, spaced relation, an armature member pivotall)v lsuspended upon said support and depending between said magnets and pivotallv oscillated thereby, stationary swltclr members, on said support, resilient switch members carried by said armature member and partaking of the movements thereof to move vinto and out of contact With said stationary switch members whereby the circuits controlling said magnets are closed and broken and a fan member pivotally mounted on said support independently of said armature my hand.

member and operatively connectedwith the latter so as to be pivotally vibrated thereby.

3. In an automatic fan, a support, electromagnets carried thereby in opposed, spaced relation thereon, Lan armature pivotally suspended upon said support and depending between said magnets and pivotally oscillated thereby, a fan member pivotally mounted on said support independently of said armature member and operativelyv connectedv therewith so as to be pivotally vibrated thereby, means whereby the. electrical energizing of said magnets is controlled and a pair of opposed springs extending in opposite direct-ions from said armature member and arranged to balance the swinging movements thereof` one of said springs dominating t-he other Whereb)Y said armature member assumes a predetermined position of ,In testimony Whereof'I have hereunto ser,l

PERAUGUST ANDERSON.

member 

